thank you very much, Barry On Thu, Jan 1, 2009 at 4:59 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> > For all Mats that PETSc provides including MatMFFD and MatShell() the > assumption is satisfied. > > Barry > > > On Jan 1, 2009, at 6:45 PM, Yujie wrote: > > I got a submatrix B from A in parallel mode. Because the rows numbers of B >> in some processors of the cluster become 0, I want to use >> MatGetOwnershipRange() to get the range in each processor. I have checked >> this function, the description is as folllows: >> " >> MatGetOwnershipRange >> Returns the range of matrix rows owned by this processor, assuming that >> the matrix is laid out with the first n1 rows on the first processor, the >> next n2 rows on the second, etc. For certain parallel layouts this range may >> not be well defined. >> " >> There is an assumption in this function, I am wondering whether I can use >> this function here. if not, how to do it? thanks a lot. >> >> Yujie >> > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090101/25c2ca6b/attachment.htm>
